Stuffing-box.



N0. 877,093. PATENTED JAN. 21, 1908. P. KUGEL.

STUFFING BOX. APPLIoATIioNHLBD SEPT. 11. 1905.

2 SHEETS-SHEET 1.

No. 877,093. 4 PATENTED JAN. 21, 1908.

P. KUGEL.

sTUPPI-NG B0X.

APPLIOATION'IILED SEPT. l1. 1905.

2 SHEETS-SHEET 2..

1 @wie PAUL KUGEL-OF DUSSELDORF, GERMANY.

STUFFING-BOX.

Specification of Letters Patent.'

Patented Jan. 21, 1908.

Application and september 11.1905. serial No. 277.907.

My invention relates to a'stufiing box for a' rotating shaft containing a metal packing which comprises a series of rings arranged as f herein described and my object is to provide vto revolve with, the rotating shaft.

a metal packing sealing up, almost without obstructing or checking the rotation. of-the shaft, a compartment or two adjoining compartments under pressure of any liquid, steam or gas.

l attain my object by the construction illustrated on the drawingeherewith in which Figure 1 is an axial section of a stufiing box where the rings of rectangular section hereinjbelow referred to as embracing the shaft are held in position by a sleeve as herein below described and where the leather collaralso referred to below'is together with a plate sealing 'up an end compartment connected with the rear compartment by a canal; Fig.

l 2 is a modification of the construction shown in Fig. 1, the said leather collar being in the rear portion of the journal box, and Fig. 3 is another modification, where the said ring are integral with the shaft..

To the end-wall (a) of a rotatory engine is secured a journal box (b) through which the shaftl (c) extends, the examples illustrated showing the end of a shaft as coming out from a rotatory steam engine or the like, though my evice may as well be employed for sealing up two adjoining compartments through both of which the rotating shaft is passed and of which each is under another pressure. The said shaft (c) is provided with a rib (c)l against which abut behind each other a series of loose outward ianged rings (d) of rectangular section, held in position by a sleeve or ring (f) which is controlled by a screw nut by which the said ring (f) is pressed on fast'against the said rings (d) which are thus rigidly secured to and made yOr the said rings (d) may be alternately arranged rings of two diderent diameters or they may as well be integral with the` shaft being ribs cut of the latter on a lathe, which are smaller than' the rib (c), or otherwise'A rovided. Their number may be'determine 'by the requirements of each particular case.

vThese rlngs (d) are inclosed by another set of concentric rmgs (h) of corresponding section, their inward projecting ianges engaging in the grooves between the ribs or rings (d). The said rings (h) may be again surrounded and kept close by a bushino' (t) being united with the latter by means of a screw ring (01 pressing when screwed in against the` said rings (h). The said bushing (t) glides len itudinally within a lining (7c) vsecured to t e box (b) by screws (m) and is protected against an overturning by a radial pin (l).

Now, the pressure in the engine (a.) would with its full force act against the rings (d), thus producing a surface pressure between the rings which would result in great friction, waste of power and the like. This trouble can be avoided by permitting the pressure in the engine to act not only upon the flat end,

of the bushing facing the engine, but also upon the other end, thus compensating the two ressure's, if not entirely at least sufficient y for the purpose. I, therefore, provide, as showninFig. 1, a plate (o) sealing up the compartment (71,) an collar of leather or other packing and `connect the said compartment, adjoining the outer end of the bushing (t), by means 'of a canal (i'c) with the com artment faced by the other end of the bushing (i), thus permitting the pressure in theengine to act as reuired upon both endsof the same. The

provided with a orce exerted by this-way u on the rings (d) being determined by the ii'l'erence of the areas of the circular Afaces J, J 2 of Fig. 1, I do not restrict myself to any particular size of the ring surfaces, but lleave it to'the builder of the device to elect whichever size he may adopt for the particular machine and thus determine the pressure to be exerted by the said rings (d) upon the rin s (h). l

As shown by Fig. 2 the a oresaid collar` (p) of leather or other packing, may be laced behind the bushing (i) to embrace a cy indric extension (i2) of the latter whenvdepending on the diderence in area between the circular surfaces J and .122.

' Iam aware that prior to my invention stuffing 'boxes and shaft packings with outwardly extending projections and a sleeve with inwardly extending projections in the s aces between the former have been made, therefore do not claim such a construction What I do lclaim as my invention ands desire to protect by Letters Patent is:

1. In a stufn box for a rotary shaft, the combination wit thereon, a plurality of outwardly flanged innerl rings closely encircling said shaft, arranged one behind the other behind said. collar, means for pressing said inner rings axially one against the other and against said collar, a plurality of inwardly ilan'ged outer rings coaxial with and embracing said inner rings with their inward'flan es engaging between the outward flanges 0I the inner rings,

` an axially slidable but not rotatable 'bushing inclosing said outer rings, and a plate witha cupped 'packing of pliable material fixed to the stuhng box at one end of said bushing and cooperating therewith t0 relieve .the-

same of a considerable'part of the axial uid pressure thereon.

2. In a stuiiing box for a rotary shaft, the combination with said shaft,` of a xed collar thereon, a plurality of outwardly flanged inner rings encircling said shaft arranged'one behind the other behind said collar, means for pressing said inner rinlgls one against the other and against said co ar, a plurality of inwardly flanged outerrings coaxial with and embracing said inner rings with their inward `flanges engaging between the outward iianges of the inner rings, an axially slidable but not rotatable bushing inclosing said outer rin s, with a screw-threaded rear aperture for t e introduction of said outer' rings,

said shaft, ofa fixed collar a screw-threaded ring Spi-@Wed im@ Said apature td close same, a lining fitting the internal periphery of the stuling box closely encir cling said bushing, and formed with a duct to admit fluid ressure from the front to the back of sai bushin and a plate with 'a cupped packing of p iable material xed to the rear end of the stufng box.

3. In a stulhng box for a rotary shaft, the combination with said shaft, of a plurality of outwardly flanged innerrings inte all with.

said vshaft and arranged one/.behind t e other, a plurality ofinwardly flanged outer rings coaxial with and embracing said fixed rings with their inward flanges engaging between the outward ianges of the fixed rings, an

` axially slidable but not rotatable bushing in- PAUL KUGEL.

Witnesses WILLIAM EssENWEIN, WILLIAM HUPFAUF. 

